In the embodiment of FIG. 2, the wireless communication device 12 (first radio node) may determine a resource allocation by receiving and reading further control signaling 205 from the second radio node (radio network node 10), which may indicate that the second radio node has scheduled the wireless communication to be performed over a particular uplink resource allocated to the first radio node. In other words, in some examples, the further control signaling 205 includes a scheduling grant that has one of different possible values corresponding to the different possible resource allocations in the set of possible resource allocations previously obtained by the wireless communication device 12. In an aspect, these different possible values can take the form of an index (or index indicator) that is included in the scheduling grant to identify a particular value (i.e., specific time-frequency resource(s), resource element(s), or resource block(s)) of a resource allocated to the wireless communication device 12 for uplink transmission over a shared uplink channel.